Lochinvar & A.O. Smith 100277758 Impeller 321702-401 It will not interface correctly

It will not interface correctly with legacy mechanical units that require a traditional bulb-and-capillary style sensor

Pilot-operated disc construction ensures high flow capacity and reliable operation in suction line service

Industrial Durability: Built with a conformal coating to protect internal circuitry against moisture and vibration

ensuring your central AC system operates at peak efficiency during high-load periods

Lochinvar & A.O. Smith 100277758 Impeller 321702-401 It will not interface correctlyThe Lochinvar & A. O. Smith 100277758 Impeller is a precision engineered 4. 75 inch plastic component designed for high efficiency hydraulic systems. As the 100277758 direct replacement for 100133559, this part ensures seamless compatibility with Lochinvar boiler pump systems and A. O. Smith water heaters. For technicians servicing high efficiency fire tube boilers or commercial water heaters, maintaining proper fluid velocity is critical for heat